DeKalb County Climate
DeKalb County, Alabama
Avg Annual Temp
59.6°F
Annual Precip
57.2"
Annual Snowfall
3.1"
Extreme Heat Days
34.339999999999996
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About DeKalb County Weather
Alabama's Cooler Mountainous Climate
DeKalb County averages 59.6°F annually, making it one of the coolest counties in the state. Its climate is more in line with national averages than the rest of Alabama.
The State's Cool Weather Anchor
At 59.6°F, DeKalb is nearly 4 degrees cooler than the Alabama state average of 63.2°F. This makes it a popular refuge from the state's more intense southern heat.
Coolest in the North Region
DeKalb is slightly cooler than Cullman County's 60.0°F average. It also records 3.1 inches of snow annually, which is significantly higher than most of its neighbors to the south.
True Winters and Mild Summers
The county experiences a real winter with an average of 42.4°F and over 3 inches of snow. Summers are much milder than the state average, with only 34 days exceeding 90°F.
Winterize Homes for Snow and Ice
Unlike most of Alabama, DeKalb residents must prepare for 3.1 inches of snow and freezing 40.2°F January averages. Home heating and pipe insulation are higher priorities here than in the southern counties.
Frequently Asked Questions
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.